Los Angeles Dodgers second baseman Mark Ellis is waved home by third base coach Tim Wallach in the sixth inning of the game against the Pittsburgh Pirates at Dodger Stadium. Jayne Kamin-Oncea-, USA TODAY Sports

Los Angeles Dodgers center fielder Matt Kemp takes a bow in the outfield before the game against the Pittsburgh Pirates at Dodger Stadium. Jayne Kamin-Oncea, USA TODAY Sports

Robbie Parker, right, receives a hug from Rangers representative Ivan Rodriguez after throwing out the ceremonial first pitch. Parker's 6-year-old daughter, Emilie, was among the victims of the Sandy Hook school shooting in Connecticut. Tony Gutierrez, AP

Giants fans Tom Neuerburg and Mark Garcia pose for a photo on opening day before the game against the Cardinals. Kelley L Cox, USA TODAY Sports

Josh Hamilton strikes out in his first at-bat against the Rangers at Rangers Ballpark in Arlington. Tim Heitman, USA TODAY Sports

Tigers first baseman Prince Fielder, left, pitcher Justin Verlander, center, and third baseman Miguel Cabrera unveil a 2012 American League Championship banner before their opening day game against the Yankees. Paul Sancya, AP

Phillies relief pitchers Antonio Bastardo, left, and Mike Adams, right, warm up in right field before an opening day game against the Royals. Matt Smith, AP

Angels right fielder Josh Hamilton returns to Arlington, Tex., for the first time since he departed. Tim Heitman, USA TODAY Sports